World's coral reefs threatened by lack of effective protection
June 22, 2006
Highly protected coral reefs just 2% of world total: Scientists
Of the 18.7% of tropical coral reefs that lie within "Marine Protected Areas," less than 2% are extended protection complete with regulations on extraction, poaching and other major threats, according to an analysis published in Science Magazine on June 23.
The analysis assesses protection afforded to coral reefs from such threats as resource extraction, poaching, pollution, coastal development and overfishing. It also took account of such factors as MPA size and distances to neighboring protected areas.
"Although coral reefs are declining worldwide, actions to reverse such a crisis are woefully inadequate in most countries," says Dr. Camilo Mora, a scientist at Dalhousie University and lead author of the study. "Clearly, lines on the map are not enough to protect the world's coral reefs."
The authors recommend that protected areas need to be enforced to prevent poaching and should be expanded to include the management of external threats. Furthermore, the authors suggest MPAs should be bigger and linked to other protected areas to be more effective. "The future of coral reefs worldwide relies on countries and conservation agencies seriously embracing these objectives," adds Dr. Mora.
Great Barrier Reef in Australia
Ocean biodiversity hotspots have higher productivity than other areas - new study
A study of barnacles on the central Oregon Coast has revealed significant "hot spots" of ocean productivity where marine life has much greater reproductive potential - information that could be a key to the successful siting of marine reserves. The study highlights the importance of including information on ecological processes when designing reserves and other types of marine protected areas, the scientists said. It is one of the first studies to link reproductive variation with key ecological processes on a scale that's relevant to management and conservation.
Madagascar's reefs escape damage from global warming
A survey of coral along Madagascar's northeast coast suggests that they island's reef may have so far escaped the damaging effects of warmer ocean temperatures attributed to global climate change. Researchers from Conservation International (CI), a leading conservation group, found that the region's coral reefs have avoided the bleaching that has affected other Indian Ocean reefs. The scientists believe that cool water currents from adjacent deep ocean areas have helped offset the warming effects of climate change.
"What we found, in essence, is that we are creating paper parks," explains co-author and fellow researcher Ransom Myers of Dalhousie University. "The establishment of Marine Protected Areas is rarely followed by good management and enforcement. And while management of MPAs varies worldwide, it was particularly low in areas of high coral diversity such as the Indo-Pacific and the Caribbean."
"This new study combines a simple approach with detailed large-scale databases to provide the first such global assessment of biodiversity protection," says co-author Dr. Serge Andréfouët, a scientist with the Institut de Recherche pour le Développement in New Caledonia. "We lack similar global assessment for other marine habitats, including kelp forests, seagrass beds, and deep-sea corals; but we have no reason to believe these may be better protected than tropical coral reefs."
"This paper is a wake-up call," says Dr. Peter Sale, Assistant Director of the United Nations University's International Network on Water in Canada and a University of Windsor professor. "It reminds us that despite recent successes in protecting coral reefs, our actions to date fall far short of what is required to save these most diverse of all marine habitats."
This article is a modified news release from Dalhousie University .
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